Kang Do-Chang and Oh Ji-Hyeok who found solid evidence from Ki Dong-Jae's cell phone arrested Choi Yong-Geun TJ's Legal Team Leader on charges of Jung Hee-Joo's murder. Kang Do-Chang and Oh Ji-Hyeok have a hard time interrogating Choi Yong-Geun who used to be a detective. Meanwhile, Oh Ji-Hyeok goes to TJ Group's headquarters after seeing the video of Cheon Sang-Woo ordering to kill Jung Hee-Joo. At the same time, Cheon Na-Na suspects the death of her husband, Woo Tae-Ho.
Arrestan a Yong‑geun, pero usa su experiencia para complicar el interrogatorio. Los detectives buscan un móvil para el asesinato de Sang‑u.
Yong-geun é preso, mas usa sua experiência para dificultar o interrogatório. Os detetives procuram o motivo do assassinato de Sang-u.
